chain table round 4: double the indentation (owner refinement)

Each staircase step is now TWO columns (36px): chains pl-12 — the
checkbox aligned with the cluster's FOLDER icon — and statements pl-21
— the checkbox where a chain icon WOULD sit (the chains lost theirs;
the pattern continues anyway). Live-measured: chain checkbox = folder
icon (336=336); statement checkbox = chain checkbox + 36 (372).

components/chain-table.tsx

@@ -33,12 +33,14 @@
  * conclusion marker down there).
  *
  * THE ALIGNMENT STAIRCASE (owner ruling, round 3): every level's
- * checkbox sits DIRECTLY UNDER its parent's expander arrow — open a
- * folder and the chain checkboxes line up with the arrow, same one
- * level down. Geometry: the expander shares the checkbox's 14px width
- * (h-5 w-3.5), so each nesting step is exactly checkbox(14) + gap(4) =
- * 18px — clusters pl-3 (12px, checkbox at 12), chains pl-7.5 (30px =
- * the cluster expander), statements pl-12 (48px = the chain expander).
+ * checkbox sits ONE COLUMN under its parent's expander — aligned with
+ * the parent's ICON slot: open a folder and the chain checkboxes line
+ * up with the FOLDER icon; the statements step one more unit out (the
+ * would-be chain-icon column — the chains lost their icons but the
+ * pattern continues, owner: "double the indentation"). Geometry: every
+ * column is 14px + 4px gap = 18px and each step is TWO columns (36px) —
+ * clusters pl-3 (12px), chains pl-12 (48px = the cluster's folder
+ * icon), statements pl-21 (84px = where a chain icon WOULD sit).
  *
  * SORTING: all three columns sortable (owner ruling — "consistency is
  * key"): Name (A→Z), Props (largest-first), Created (newest-first);
@@ -265,9 +267,9 @@ export function ChainTableBody({
 
 			{/* The list: NO per-row lines (owner ruling) — the ONLY horizontal
 			    separators sit between cluster groups; the ALIGNMENT STAIRCASE
-			    carries the hierarchy (owner round 3: each level's checkbox sits
-			    under its parent's expander arrow — clusters pl-3, chains pl-7.5
-			    under the folder arrow, statements pl-12 under the chain arrow).
+			    carries the hierarchy (owner round 4, "double the indentation":
+			    two-column steps — chains pl-12 aligned with the folder icon,
+			    statements pl-21 where a chain icon would sit).
 			    All three columns sort, small chevron on active. */}
 			<div className="min-h-0 flex-1 overflow-y-auto">
 				<div className="sticky top-0 z-10 flex items-center gap-1 px-3 py-1.5 text-[11px] uppercase tracking-widest text-muted-foreground/70 backdrop-blur">
@@ -355,7 +357,7 @@ export function ChainTableBody({
 											<div
 												data-testid={`chain-row-${chain.id}`}
 												aria-label={formatChainLine(chain, Object.fromEntries([...byId.entries()].map(([id, n]) => [id, { name: n.name }])))}
-												className="flex items-center gap-1 py-1 pl-7.5 pr-3"
+												className="flex items-center gap-1 py-1 pl-12 pr-3"
 											>
 												<RowCheckbox
 													checked={selectedInChain === memberIds.length && memberIds.length > 0}
@@ -402,7 +404,7 @@ export function ChainTableBody({
 														<div
 															key={id}
 															data-testid={`prop-row-${id}`}
-															className="flex items-start gap-2 py-1 pl-12 pr-3"
+															className="flex items-start gap-2 py-1 pl-21 pr-3"
 														>
 															<RowCheckbox
 																checked={selection.has(id)}

next-env.d.ts

@@ -1,7 +1,7 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
-import "./.next/dev/types/routes.d.ts";
-import "./.next/dev/types/root-params.d.ts";
+import "./.next/types/routes.d.ts";
+import "./.next/types/root-params.d.ts";
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/app/api-reference/config/typescript for more information.

tests/render-chain-table.test.tsx

@@ -139,9 +139,9 @@ describe("ChainTableBody — THE shared TopBar + the lines law (owner, round 2)"
 		const sep = html.split("border-b border-border/60").length - 1;
 		assert.ok(sep >= 2, "separators between groups");
 		// chain rows themselves carry NO border — their entire class list is
-		// the staircase law (pl-7.5 = under the cluster's expander arrow);
+		// the staircase law (pl-12 = aligned with the cluster's FOLDER icon);
 		// the chip outlines' border-border/70 is an outline, not a row line
-		assert.ok(html.includes('class="flex items-center gap-1 py-1 pl-7.5 pr-3"'), "the chain row: staircase indent, no border");
+		assert.ok(html.includes('class="flex items-center gap-1 py-1 pl-12 pr-3"'), "the chain row: staircase indent, no border");
 	});
 });
 
@@ -186,13 +186,13 @@ describe("ChainTableBody — chain rows (chips + connectors)", () => {
 		// owner ruling: the derivation is already encoded in the chain line —
 		// no conclusion marker down here
 		assert.ok(!html.includes("prop-conclusion"), "no conclusion marker anywhere");
-		// THE ALIGNMENT STAIRCASE (owner ruling, round 3): each level's
-		// checkbox sits under its parent's expander arrow. The expander
-		// shares the checkbox's 14px width, so each step is 18px: clusters
-		// pl-3 (12) → chains pl-7.5 (30 = the cluster expander) →
-		// statements pl-12 (48 = the chain expander)
-		assert.ok(html.includes("pl-12"), "statements under the chain's expander");
-		assert.ok(html.includes("pl-7.5"), "chains under the cluster's expander");
+		// THE ALIGNMENT STAIRCASE (owner ruling, round 4 — "double the
+		// indentation"): each level's checkbox sits under its parent's ICON
+		// slot, TWO columns (36px) past its own. Every column is 18px:
+		// clusters pl-3 (12) → chains pl-12 (48 = the folder icon) →
+		// statements pl-21 (84 = where a chain icon WOULD sit)
+		assert.ok(html.includes("pl-21"), "statements at the would-be chain-icon column");
+		assert.ok(html.includes("pl-12"), "chains aligned with the folder icon");
 		assert.ok(html.includes("h-5 w-3.5"), "the expander shares the checkbox's 14px width");
 	});
 });